refactor: remove unused variables and imports, and internalize module-specific functions and interfaces.

lib/hooks/useHistoryDownloader.ts

@@ -11,7 +11,7 @@ import { useHistoryStore } from '@/lib/store/history-store';
 import { parseHLSManifest } from '@/lib/utils/hlsManifestParser';
 import { downloadSegmentQueue } from '@/lib/utils/segmentDownloader';
 
-export function useHistoryDownloader() {
+function useHistoryDownloader() {
     const viewingHistory = useHistoryStore((state) => state.viewingHistory);
     const processedUrlsRef = useRef<Set<string>>(new Set());
     const pathname = usePathname();

lib/utils/cacheManager.ts

@@ -6,7 +6,7 @@ const MAX_CACHE_SIZE_MB = 1000; // 1GB
 
 interface CacheMetadata { url: string; videoUrl: string; cachedAt: number; size: number; lastAccessed: number; }
 
-export interface CacheStats { totalEntries: number; totalSizeMB: number; oldestEntry: number; newestEntry: number; }
+interface CacheStats { totalEntries: number; totalSizeMB: number; oldestEntry: number; newestEntry: number; }
 
 class CacheManager {
     private metadata = new Map<string, CacheMetadata>();

lib/utils/hlsManifestParser.ts

@@ -21,7 +21,6 @@ export async function parseHLSManifest(src: string): Promise<Segment[]> {
 
     const lines = manifestText.split('\n');
     const segments: Segment[] = [];
-    const baseUrl = src.substring(0, src.lastIndexOf('/') + 1);
     let currentSegmentDuration = 0;
     let currentStartTime = 0;
 

lib/utils/proxy-utils.ts

@@ -1,4 +1,3 @@
-import { NextRequest } from 'next/server';
 
 export async function processM3u8Content(
     content: string,
@@ -19,7 +18,7 @@ export async function processM3u8Content(
             const absoluteUrl = new URL(line.trim(), base).toString();
             // Wrap in proxy
             return `${origin}/api/proxy?url=${encodeURIComponent(absoluteUrl)}`;
-        } catch (e) {
+        } catch {
             return line;
         }
     });

lib/utils/search-stream.ts

@@ -1,7 +1,6 @@
 import { Video } from '@/lib/types';
 import { getSourceName } from '@/lib/utils/source-names';
 import { calculateRelevanceScore, hasMinimumMatch } from '@/lib/utils/search';
-import { binaryInsertVideos } from '@/lib/utils/sorted-insert';
 
 interface StreamHandlerParams {
     reader: ReadableStreamDefaultReader<Uint8Array>;
@@ -24,14 +23,12 @@ export async function processSearchStream({
 }: StreamHandlerParams) {
     const decoder = new TextDecoder();
     let buffer = '';
-    let lastProgressTime = Date.now();
     let timeoutId: NodeJS.Timeout | null = null;
     let isCompleted = false;
 
     // Auto-complete if no progress for 3 seconds
     const resetTimeout = () => {
         if (timeoutId) clearTimeout(timeoutId);
-        lastProgressTime = Date.now();
 
         timeoutId = setTimeout(() => {
             if (!isCompleted) {

lib/utils/segmentDownloader.ts

@@ -24,7 +24,6 @@ export async function downloadSegmentQueue(options: DownloadQueueOptions): Promi
     if (!('caches' in window)) return;
 
     const cache = await caches.open(CACHE_NAME);
-    let activeCount = 0;
     let currentIndex = startIndex;
 
     const processNext = async () => {
@@ -33,7 +32,6 @@ export async function downloadSegmentQueue(options: DownloadQueueOptions): Promi
         const segment = segments[currentIndex];
         const url = segment.url;
         currentIndex++;
-        activeCount++;
 
         const timeoutController = new AbortController();
         const timeoutId = setTimeout(() => timeoutController.abort(), TIMEOUT_MS);
@@ -72,11 +70,10 @@ export async function downloadSegmentQueue(options: DownloadQueueOptions): Promi
                     }
                 }
             }
-        } catch (err) {
+        } catch {
             // Ignore errors
         } finally {
             clearTimeout(timeoutId);
-            activeCount--;
             if (!signal.aborted) processNext();
         }
     };